• 4L80-E
• Short Version, Retrofits ’95-later detent levers to early ’91–’94 units without external NSS.

Sonnax manual shift shaft kit 38511-03K for the GM 4L80-E is an early model ’91–’94 manual shift shaft that retrofits to a late-model ’95-later manual shaft detent...Read More

Learn More

• 4L80-E
• 4L85-E
• Output & reaction planetaries, 1999 & Later

The output and reaction planetary pinion assemblies in '99-later 4L80-E transmissions frequently wear out and must be rebuilt or replaced. New replacement assembli...Read More

Learn More

• 4L80-E
• 4L85-E
• Output & reaction planetaries, '99-later

The output and reaction planetary pinion assemblies in '99-later 4L80-E transmissions frequently wear out and must be rebuilt or replaced. New replacement assembli...Read More

Learn More

• 4L80-E
• 4L85-E

Sonnax Sure Cure kit SC-4L80E, fully compatible with '91-later GM 4L80-E and 4L85-E units, is a comprehensive reconditioning package featuring the best Sonnax prod...Read More

Learn More

• 6R60
• 6R75
• 6R80 (2009–2014)
• ZF6HP19
• ZF6HP26
• ZF6HP32
• Fits 6R80 '09-'14. Does not fit units with a 053 separator plate.

Wear is commonly found at different areas in the ZF6HP19/26/32 (Gen. 1) and Ford 6R60, 6R75 and 6R80 pressure regulator bores. When the sleeve is worn, line pressu...Read More

Learn More

• ZF6HP19
• ZF6HP26
• ZF6HP32
• Fits units with 053 separator plate only.
  OE valve name: SYS.DR-V

Vehicles equipped with ZF6HP19/21/32 (Gen. 1) transmissions often develop erratic or high line pressure due to excessive wear in the OE pressure regulator bore and...Read More

Learn More

• ZF6HP19
• ZF6HP26
• ZF6HP32
• Fits units with 053 separator plate only.

Vehicles equipped with ZF6HP19-26-32 (Gen. 1) transmissions often develop erratic or high line pressure due to excessive wear in the OE pressure regulator sleeve. ...Read More

Learn More

• 6R60
• 6R75
• 6R80 (2009–2014)
• ZF6HP19
• ZF6HP26
• ZF6HP32
• Fits 6R80 '09-'14. Cannot be used in units that have a 053 separator plate.
  OE valve name: SYS.DR-V

Wear is commonly found at different areas in ZF6HP19/26/32 (Gen. 1) and Ford 6R60/6R80 pressure regulator bores. Wear at the sleeve end causes high line pressure l...Read More

Learn More

• ZF6HP21
• ZF6HP28
• ZF6HP34

Wear is commonly found in ZF6HP19/26/32 (Gen. 2) pressure regulator bores allowing critical line pressure balance fluid to cross-leak to exhaust, causing high pres...Read More

Learn More

• ZF6HP21
• ZF6HP28
• ZF6HP34
• ZF valve name: SYS.DR-V

In ZF6HP21/28/34 (Gen. 2) valve bodies, wear is commonly found at different areas in the pressure regulator bore. Wear at the balance end causes high pressure spik...Read More

Learn More

• 6R100
• 6R80 (2015-Later)
• Fits '15-later 6R80 units.

Wear is commonly found at different areas in Ford 6R80 pressure regulator bores. Wear at the sleeve end causes high line pressure leading to broken drums, pistons ...Read More

Learn More

• 6R100
• 6R80 (2015-Later)
• Fits '15-later units.

Wear is commonly found at different areas in the Ford 6R80 '15-later pressure regulator bore. When the sleeve is worn, line pressure balance fluid will leak to exh...Read More

Learn More